HydroBASINS lev08 watershed · #4080452530
Bassin de 北沙河
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 1 administrative regions : Beijing
Sub-basin area
15,9km²
Upstream area
908,2km²
Discharge
1,07m³/s
Mean elev.
48m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 兴隆沟574 km²
- Bassin de 东沙河318 km²
1 dept-equivalent regions (GADM L2)
- BeijingBeijing · China15.9 km²100.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
949 distinct species · 23 715 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de 北沙河 : 23 espèces reliées par 48 interactions GloBI sur 3 types (connectance 9.7%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
12,1°C
Annual rain
614mm
Moisture idx (CMI)
-0,44
Runoff
40mm/an
PET
1 104mm
AET
524mm
Mean slope
0,4°
Water table
38cm
Forest
0%
Crops
12%
Urban
100%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)